package com.lh.threadtest.t12;

import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/****
 * 
 * @ClassName: CyclicBarrierTest
 * @Description: java5的CyclicBarrier同步工具
 * @author Liu
 * @date 2018年1月18日 下午4:35:08
 *
 */
public class CyclicBarrierTest {

	public static void main(String[] args) {
		ExecutorService service = Executors.newCachedThreadPool();
		final CyclicBarrier cb = new CyclicBarrier(3);
		for (int i = 0; i < 3; i++) {
			Runnable runnable = new Runnable() {
				public void run() {
					try {
						Thread.sleep((long) (Math.random() * 10000));
						System.out.println("线程" + Thread.currentThread().getName() + "即将到达集合地点1，当前已有"
								+ cb.getNumberWaiting() + "个已经到达，正在等候");
						cb.await();

						Thread.sleep((long) (Math.random() * 10000));
						System.out.println("线程" + Thread.currentThread().getName() + "即将到达集合地点2，当前已有"
								+ cb.getNumberWaiting() + "个已经到达，正在等候");
						cb.await();
						Thread.sleep((long) (Math.random() * 10000));
						System.out.println("线程" + Thread.currentThread().getName() + "即将到达集合地点3，当前已有"
								+ cb.getNumberWaiting() + "个已经到达，正在等候");
						cb.await();
					} catch (Exception e) {
						e.printStackTrace();
					}
				}
			};
			service.execute(runnable);
		}
		service.shutdown();
	}
}
